HIGH-THROUGHPUT BIDIRECTIONAL PASSIVE OPTICAL NETWORK, ASSOCIATED OPTICAL HUB AND LINE TERMINATION DEVICE

摘要

The invention relates to a passive optical network comprising an optical hub linked by at least one optical fibre to at least one line termination device of said network, able to emit a downgoing optical signal phase modulated in the NRZ-DPSK format and to receive an upgoing optical signal. According to the invention, said line termination device comprises means for converting the downgoing optical signal phase modulated in the NRZ-DPSK format transmitted into an optical data signal amplitude modulated in the duobinary modulation format and means for generating an upgoing optical signal phase modulated in the NRZ-DPSK format on the basis of the downgoing optical signal phase modulated in the NRZ-DPSK format. The optical hub is able to convert the upgoing optical signal phase modulated in the NRZ-DPSK format into an optical data signal amplitude modulated in the duobinary modulation format.